The invention discloses a vertical-face stone dry-hanging mounting structure. The vertical-face stone dry-hanging mounting structure comprises a keel, a bridge connecting piece (4), a wall connecting piece (1), a sliding block (5) and a stone dry-hanging piece, wherein the keel is fixed on the wall body by the wall connecting piece (1) and comprises a vertical keel (2) and a transverse keel (3); the vertical keel (2) is connected with the transverse keel (3) by the bridge connecting piece (4); the sliding block is mounted on the keel by an adjustable fixing piece; the sliding block (5) can move along the keel while adjustment is needed; and the stone dry-hanging piece is fixedly connected with the sliding block (5). A keel clamping groove is arranged on the keel (2). The adjustable fixing piece is a waist-shaped fixing piece (8) with bolt property; a spring gasket is arranged in the middle of the waist-shaped fixing piece; and a clamping groove firmly matched with the keel clamping groove is formed at the lower opening of the waist-shaped fixing piece. The vertical-face stone dry-hanging mounting structure disclosed by the invention has the advantages of simplicity in construction, no need of professional operator and high mounting speed; moreover, the division dimension of the vertical-face stone can be freely adjusted without being detached and remade while the division dimension is changed so that the material waste is avoided.